I’ve come across both in every club I’ve trained in. Master Worsfold said that most people come to martial arts are the ones not kicking people’s heads in on the street or paying people to do it for them.

However a lot of people join who have military or fighting experience. Some (adults and children) are more aggressive than they realise and they will either use their skills they learn – to amplify that aggression or they will try to adapt.

Same as having a military experience may stop you behaving a certain way in a certain situation or it may not.

It seems more possible within MMA as they are non traditional clubs and personally, learning a traditional art involves learning a different way of discipline and respect.